EP4250731A3 - Method and device for processing video signal by using reduced secondary transform - Google Patents

Method and device for processing video signal by using reduced secondary transform Download PDF

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Publication number
EP4250731A3
EP4250731A3 EP23191874.9A EP23191874A EP4250731A3 EP 4250731 A3 EP4250731 A3 EP 4250731A3 EP 23191874 A EP23191874 A EP 23191874A EP 4250731 A3 EP4250731 A3 EP 4250731A3
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EP
European Patent Office
Prior art keywords
transform
secondary transform
video signal
block
reduced secondary
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP23191874.9A
Other languages
German (de)
French (fr)
Other versions
EP4250731A2 (en
Inventor
Moonmo Koo
Mehdi SALEHIFAR
Seunghwan Kim
Jaehyun Lim
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LG Electronics Inc
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LG Electronics Inc
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Publication date
Application filed by LG Electronics Inc filed Critical LG Electronics Inc
Publication of EP4250731A2 publication Critical patent/EP4250731A2/en
Publication of EP4250731A3 publication Critical patent/EP4250731A3/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/60—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding
    • H04N19/625—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding using discrete cosine transform [DCT]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
    • H04N19/132—Sampling, masking or truncation of coding units, e.g. adaptive resampling, frame skipping, frame interpolation or high-frequency transform coefficient masking
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
    • H04N19/124—Quantisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
    • H04N19/129—Scanning of coding units, e.g. zig-zag scan of transform coefficients or flexible macroblock ordering [FMO]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/134—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
    • H04N19/157—Assigned coding mode, i.e. the coding mode being predefined or preselected to be further used for selection of another element or parameter
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
    • H04N19/17—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object
    • H04N19/176—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a block, e.g. a macroblock
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
    • H04N19/18—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being a set of transform coefficients
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/70—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by syntax aspects related to video coding, e.g. related to compression standards
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/90—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using coding techniques not provided for in groups H04N19/10-H04N19/85, e.g. fractals
    • H04N19/91—Entropy coding, e.g. variable length coding [VLC] or arithmetic coding

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Discrete Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)

Abstract

The present disclosure provides a method of reconstructing a video signal based on a reduced secondary transform, which includes: obtaining a secondary transform index from the video signal; deriving a secondary transform corresponding to the secondary transform index, wherein the secondary transform represents a reduced secondary transform, and the reduced secondary transform represents a transform outputting L (L < N) transform coefficient data (L x 1 transform coefficient vectors) based on inputted N residual data (N x 1 residual vectors); obtaining a transform coefficient block by performing an entropy decoding and a dequantization for a current block (N x N); performing an inverse secondary transform for the transform coefficient block using the reduced secondary transform; performing an inverse primary transform for a block which the inverse secondary transform is applied to; and reconstructing the current block using a block which the inverse primary transform is applied to.
EP23191874.9A 2018-04-01 2019-04-01 Method and device for processing video signal by using reduced secondary transform Pending EP4250731A3 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US201862651251P 2018-04-01 2018-04-01
EP19780916.3A EP3764649B1 (en) 2018-04-01 2019-04-01 Processing video signal by using reduced secondary transform
PCT/KR2019/003812 WO2019194504A1 (en) 2018-04-01 2019-04-01 Method and device for processing video signal by using reduced secondary transform

Related Parent Applications (2)

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EP19780916.3A Division EP3764649B1 (en) 2018-04-01 2019-04-01 Processing video signal by using reduced secondary transform
EP19780916.3A Division-Into EP3764649B1 (en) 2018-04-01 2019-04-01 Processing video signal by using reduced secondary transform

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EP4250731A2 EP4250731A2 (en) 2023-09-27
EP4250731A3 true EP4250731A3 (en) 2023-12-06

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EP23191874.9A Pending EP4250731A3 (en) 2018-04-01 2019-04-01 Method and device for processing video signal by using reduced secondary transform

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US (2) US11616985B2 (en)
EP (2) EP3764649B1 (en)
JP (2) JP7301951B2 (en)
KR (3) KR102465119B1 (en)
CN (3) CN112166613B (en)
ES (1) ES2961923T3 (en)
FI (1) FI3764649T3 (en)
HR (1) HRP20231341T1 (en)
HU (1) HUE063982T2 (en)
PL (1) PL3764649T3 (en)
SI (1) SI3764649T1 (en)
WO (1) WO2019194504A1 (en)

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CN110839158B (en) 2018-08-16 2023-03-10 北京字节跳动网络技术有限公司 Transform matrix selected coefficient dependent coding and decoding
US11589075B2 (en) * 2018-10-01 2023-02-21 Lg Electronics Inc. Encoding/decoding method for video signal and device therefor
CN113365049B (en) * 2019-03-09 2023-02-28 杭州海康威视数字技术股份有限公司 Method, decoding end, encoding end and system for encoding and decoding
US11616966B2 (en) * 2019-04-03 2023-03-28 Mediatek Inc. Interaction between core transform and secondary transform
US11172211B2 (en) * 2019-04-04 2021-11-09 Tencent America LLC Method and apparatus for video coding
CN113841401B (en) * 2019-05-10 2022-11-25 北京字节跳动网络技术有限公司 Selection of a quadratic transform matrix for video processing
US11218728B2 (en) * 2019-06-04 2022-01-04 Tencent America LLC Method and apparatus for video coding
WO2020244656A1 (en) 2019-06-07 2020-12-10 Beijing Bytedance Network Technology Co., Ltd. Conditional signaling of reduced secondary transform in video bitstreams
JP7422858B2 (en) 2019-08-03 2024-01-26 北京字節跳動網絡技術有限公司 Video processing method, device, storage medium and storage method
WO2021032045A1 (en) 2019-08-17 2021-02-25 Beijing Bytedance Network Technology Co., Ltd. Context modeling of side information for reduced secondary transforms in video
KR102638578B1 (en) * 2019-11-21 2024-02-20 베이징 다지아 인터넷 인포메이션 테크놀로지 컴퍼니 리미티드 Method and apparatus for conversion and coefficient signaling
CA3162150A1 (en) 2019-11-26 2021-06-03 Fraunhofer-Gesellschaft Zur Forderung Der Angewandten Forschung E.V. Coding concepts for a transformed representation of a sample block
GB2593778A (en) * 2020-04-03 2021-10-06 Sony Group Corp Video data encoding and decoding
CN112543324B (en) * 2020-12-06 2023-02-28 浙江大华技术股份有限公司 Video decoding method, encoding method, codec and storage medium
GB2603559B (en) * 2021-07-22 2023-08-09 Imagination Tech Ltd Coding blocks of pixels

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US11616985B2 (en) 2023-03-28
US11968398B2 (en) 2024-04-23
ES2961923T3 (en) 2024-03-14
SI3764649T1 (en) 2023-12-29
KR20240017106A (en) 2024-02-06
CN112166613B (en) 2022-10-21
KR102465119B1 (en) 2022-11-09
FI3764649T3 (en) 2023-10-19
CN115604470A (en) 2023-01-13
US20210014534A1 (en) 2021-01-14
JP7301951B2 (en) 2023-07-03
EP4250731A2 (en) 2023-09-27
CN112166613A (en) 2021-01-01
HUE063982T2 (en) 2024-02-28
PL3764649T3 (en) 2024-01-22
EP3764649B1 (en) 2023-09-27
KR20200123806A (en) 2020-10-30
JP2023120355A (en) 2023-08-29
HRP20231341T1 (en) 2024-02-16
JP2021517796A (en) 2021-07-26
US20230199220A1 (en) 2023-06-22
CN115604468A (en) 2023-01-13
WO2019194504A1 (en) 2019-10-10
EP3764649A4 (en) 2021-05-12
KR20220153118A (en) 2022-11-17
EP3764649A1 (en) 2021-01-13
KR102631119B1 (en) 2024-01-29

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